function getLocation()
{
	if (navigator.geolocation)
	{
		navigator.geolocation.getCurrentPosition(showPosition,showError)
	}
	else
	{
		document.write("geolocation is not supported by thid browser");
	}
}
function showPosition(position)
{
	sessionStorage.lati = position.coords.latitude;
	sessionStorage.longi = position.coords.longitude;
	
}
function showError(error)
{
switch(error.code) 
  {
  case error.PERMISSION_DENIED:
    x.innerHTML="User denied the request for Geolocation."
    break;
  case error.POSITION_UNAVAILABLE:
    x.innerHTML="Location information is unavailable."
    break;
  case error.TIMEOUT:
    x.innerHTML="The request to get user location timed out."
    break;
  case error.UNKNOWN_ERROR:
    x.innerHTML="An unknown error occurred."
    break;
  }
}